13513572 has 72 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 4166400.

The previous prime is 13513561. The next prime is 13513573. The reversal of 13513572 is 27531531.

13513572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13513573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43297 + ... + 43607.

It is an arithmetic number, because the mean of its divisors is an integer number (511056).

Almost surely, 2^13513572 is an apocalyptic number.

13513572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13513572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18398016).

13513572 is an abundant number, since it is smaller than the sum of its proper divisors (23282460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13513572 is a wasteful number, since it uses less digits than its factorization.

13513572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 404 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 13513572 is about 3676.0810654826. The cubic root of 13513572 is about 238.1899244301.

The spelling of 13513572 in words is "thirteen million, five hundred thirteen thousand, five hundred seventy-two".